Is the Western Digital Ultrastar 7K4000 compatible with Synology, QNAP, Asustor, TerraMaster and UGREEN NAS?

Yes. 3 Western Digital Ultrastar 7K4000 part numbers are on Synology's and QNAP's official compatibility lists, spanning 2TB to 4TB, and are listed for 141 NAS models.

What capacities does the Western Digital Ultrastar 7K4000 come in?

Listed capacities: 2TB, 3TB, 4TB.

Western Digital Ultrastar 7K4000 on the Synology, QNAP, Asustor & TerraMaster compatibility lists

Enterprise 2–4 TB

3 Western Digital Ultrastar 7K4000 part numbers appear on Synology's and QNAP's official HCLs, officially supported across 141 NAS models. Every capacity below is vendor-confirmed — pick a part number, then check it against your machine.

Listed part numbers

141

Compatible NAS models

2–4 TB

Capacity range

Listed capacities

All Western Digital Ultrastar 7K4000 drives on the list

Ranked by how many Synology, QNAP, Asustor, TerraMaster and UGREEN machines/series list each part number. Click through for exact model-by-model support.

Part number	Capacity	Listed on	Check per model
HUS724040ALA640 - 0F14688	4TB	137 machines	See compatible models →
HUS724020ALA640	2TB	75 machines	See compatible models →
HUS724030ALA640	3TB	75 machines	See compatible models →

Buying tip

Synology, QNAP, Asustor, TerraMaster and UGREEN list 3 Western Digital Ultrastar 7K4000 variants, but the high-capacity part numbers (above 12TB) tend to appear only on newer models. If you run an older or 2-bay machine, confirm your exact model on the drive page before ordering — a same-series part number is not always interchangeable.

NAS models that list Western Digital Ultrastar 7K4000 drives